DECLARE
v_country varchar2(20);
BEGIN
 select country_name into v_country  from hr.countries where country_id = 'UK';
 DBMS_OUTPUT.PUT_LINE(v_country);
END;

DECLARE
v_country varchar2(20);
BEGIN
 select country_name into v_country  from hr.countries where country_id = 'UK';
 DBMS_OUTPUT.PUT_LINE(v_country);
END COUNTRY_BLOCK;